Sheet metal container



Feb. 1, 1938. PFLEGHAR 2,107,212

SHEET METAL CONTAINER Filed Jan. 20, 1936 2 Sheets-Sheet 1 by: I

Feb. 1, 1938. PFLEGHAR 2,107,212

SHEET METAL CONTAINER I Ffied Jan. 20, 1936 2 Sheets-Sheet 2 #orney Patented Feb. 1, 1938 PATENT OFFICE SHEET IVIET'AL CONTAINER Alfons Pfleghar, Stuttgart-Bad Cannstatt, Germany, assignor to Elektro-Bohner G. in. b. H., Stuttgart-Bad Gannstatt, Germany Application January 20, 1936, Serial No. 59,944 In Germany September 26, 1934 I 6 Claims.

This invention relates to a sheet metal box or container for packing articles or commodities, which container possesses a lid having an overlapping fit with the container body when in closed position, and in which the said lid is secured to the body by means of a hinge strip consisting of a flexible or foldable material, the said strip beingsecured by its one portion to the inner face of the lid and by its other portion to the inner face of the body of the container. The essence of the invention consists in the fact that-the portion of the hinge strip for connection with the body of the container, which strip is otherwise affixed to the inner face of the lid, is conducted over its entire length or over a part of its length through the rear wall of the container to the inner face thereof, where the same is secured.

Bymeans of this hinge construction there is obtained an increase in the strength of the connection between. lid and body, as the entire surface of the strip secured to the body of the container by an adhesive offers res'istanceas a single unitarysurface to detachment from the body if an attempt is made to open the lid beyond the normal position of opening, whereas in the known form of'construction of the box or container resistance is presented to detachment 'by a stripping action only, for instance, along a single line, that is to say, over an infinitely small surface, so that an unwrapping of the strip may readily .occur. In consequence the primary factor as regards thev strength of the connection according to the invention .is the strength of the material of the strip itself, which may be selected as desired.

. Theembodiment of the hinge in the case of :sheet metalboxes or containers according to the invention accordingly also results in the fact that a greater degree of independence is obtained than heretofore. of the quality and the extent of heating of the adhesive employed, which facilitates the production of the connection.

' An additional advantage consists. in the fact that there may be employed a stronger material for producing the hinge, for example a thicker paper or a stronger fabric, than in the case of containers or boxes of the kind hitherto known having an inner hinge joint composed of fabric,

.50 since in the embodiment according to the invention there is, generally speaking, merely one layer ofpaper or fabric between the lid and the body of the container.

A particularly convenient form of embodiment .551of the arrangement accordingto the invention is one in which the one portion of the strip is passed through a slot in the wall of the body below the point of overlap of the lid into the interior of the container and is secured by an adhesive to the inner face of the body over its entire length.

Various forms of embodiment of the invention are illustrated in the accompanying drawings.

Fig. 1 is a perspective View of a box or container with the lid open. t

Fig. 2 is a cross-section of the boxaccording to Fig. 1 taken along the line IIII, the lid in this case being closed.

Fig. 3 is a similar sectional view with the lid open.

Fig. 4 is a longitudinal section through the closed box along the line IV--IV in Fig. 2

Figs. 5 and 6 show sections similar to Fig. 4 of two modified forms of embodiment of the box.

Fig. 7 is a longitudinal section, likewise similar to Fig. 4, of an additional form of embodiment,

Fig. 8 being a part-section taken along .the line VIIIVIII in Fig. '7, and r Fig. 9 is a perspective view of an additional form of embodiment of the box with the lid open,

and

Fig. 9a is a cross-section of the box according to Fig. 9 along the line IXa-IXa with the'lid closed.

Fig. 10 is a cross-section through a closed box or container which differs from that in Figs. 9 and 9a by the fact that in this case the lid-supporting section of the box is not constricted.

Fig. 11 is a cross-section corresponding with Fig. 10 with the lid open.

Fig. 12 shows a cross-section taken along the line C[IX[I in Fig. 10.

Fig. 13 is a cross-sectional View similar'to Fig. 12 of a modifiedform of embodiment of the box or container.

In all of the forms of embodiment illustrated the lid has been designated a and the body of the box or container 1), whilst d designates the part of the body which overlaps or is received within the lid. This overlapping part 12 may either be plain or constricted, as variously shown in the different figures of the drawings.v

The inwardly disposed hinge of flexible or foldable material between the lid 11 and the body b is designated 0 in its entirety. The box or container may be of any desired form, except for the fact that the parts of the box and the lid between which the hinge strip 0 is arranged must present a straight line. In the. drawings the box isv assumed to be of rectangular form.

In the form of embodiment according to Figs. 1 to 4 the hinge connection consists of a plain strip, for example of fabric, the one portion e of which is secured by an adhesive to the inner face of the edge a of the lid, so that when the lid is closed, as shown inFig. 2, it is situated between the overlapping part d of the body b of the box and the edge a of the lid.

The portion 1 of the connecting strip extending beyond the lower edge of the lid is passed into the interior of the container body b through a slot g provided for this purpose in the wall I) of the container below the overlapping part thereof, and is secured by an adhesive to the inner face of the wall I) of the body b, as also clearly shown in Fig. 2. The slot 9 in the wall b of the box possesses a width corresponding with the width or length of the strip 0 and extends practically over the entire length of the one longitudinal wall of the box or container.

If the lid a is opened, the parts of the box assume the relative positions shown in Fig. 3, and the portions e, f of the hinge strip maintain the connection between the body b and the lid a.

Detachment of the lid a from the body b of the box when the lid is open, for example by forcing down the lid a in the direction of the arrow h, is not likely to occur and is only possible by tearing the hinge strip since the entire gummed surface of the portion of the strip 1 presents resistance to detachment by force applied in the direction indicated.

The form of embodiment of the box illustrated in Fig. 5 differs from that described in the above insofar as in the wall b of the body of the box b below the overlapping part d there are provided in place of one long slot a plurality of shorter slots adjacently disposed in certain spacial relation. In this form of embodiment of the box it is assumed that three strips e, j are employed for connecting the lid 0. With the body b, the strips 6, f each corresponding in width with the width of a slot 9. The parts e of the three strips are secured by an adhesive to the inner face of the edge of the lid, whilst the portions f of the three strips are passed through the slots 9 and in turn are secured by an adhesiveagainst the inner face of the wall b of the body b of the box.

The form of embodiment of the box illustrated in Fig. 6 agrees with that in Fig. 5 with the exception that in this case a strip of flexible material is employed, the long upper portion e of which is gummed to the inner face of the edge of the lid, and the lower portion of which, by cutting away corresponding sections, forms three tongues f, which pass through slots g in the wall of the body.

The form of embodiment of the box illustrated in Figs. '7 and 8 is similar to that in Fig. 6. In this case, however, the parts i of the connecting strip situated between the tongues j are not cut away, but are folded over towards the top and, as disclosed more particularly by Fig. 8, are secured by an adhesive against the outer face of the overlapping part, the strength of the connection between the body b of the box and. the lid a under certain circumstances being thus increased.

The modified form of embodiment of the box shown in Figs. 9 to 12 differs from that in Figs. 1 to 4 by the fact that the portion ,1 of the connecting strip extending beyond the lower edge of the lid a, which portion is likewise passed through a slot 9 in the wall b ofthe body b into the interior of the box, is secured by an adhesive to the inner face of the overlapping part (1 of the body b, as shown clearly in Figs. 9 to 12.

The form of embodiment of the box illustrated in Fig. 13 differs from that just described by the fact that in the wall b of the body b of the box below the overlapping part d there are provided in place of a long slot a plurality of shorter slots 9 adjacently disposed in certain spacial relation. The connection between the lid a and the body b of the box or container is again performed by means of a strip of flexible material, the one half e of which is secured by an adhesive against the inner face of the edge of the lid, and the other portion of which, by cutting away corresponding sections, is composed of tongues j, which arepassed through the slots 9' in the wall of the body of the box and are secured by an adhesive to the inner face of the overlapping part d of the body of the box.

It is obvious that in an embodiment of the box according to Fig. 13 there may also be employed in place of one connecting strip three strips, each having a length corresponding with that of the related slot.

What I claim as new and desire to secure by Letters Patent is:

1. In a sheet metal container, a body portion constituting the container proper, a lid adapted, in closed position, to have an overlapping fit with a part of said body portion, and. a hinge comprising a strip of flexible material secured to the inner face of the said lid and passing for at least a part of its length through a wall of the said body portion to the interior of the body portion at a point below the lid-overlapping part thereof and secured to the inner faceof the said Wall.

2. In a sheet metal container, a body portion constituting the container proper havinga slot in a wall thereof, a lid adapted,xin'closed position, to have an overlapping fit witha part of said body portion, and a hinge comprising a strip of flexible materialsecured to the inner face of the said lid and passingfor at least a part of its length through the slot in the wall of the said body portion to the interior ofv the body portion at a point below the lid-overlapping part thereof and secured by an adhesive to the inner face of the said wall.

3. In a sheet metal container, a body portion constituting the container proper, a lid adapted, in closed position, to have an overlapping fit with a part of said body portion, and a hinge comprising a strip of flexible material secured to the inner face of the said lid and passing for at least a part of its length through a wall of the said body portion to the interior of the body portion at a point below the lid-overlapping part thereof and secured to the inner face of the said lidoverlapping part of the body portion.

4. In a sheet metal container, a body portion constituting the container proper having slots in r a wall thereof, a lid adapted, in closed position, to have an overlapping flt with a part of said body portion, a hinge comprising a strip of flexible material secured to the inner face of the said lid, and tongues on the said strip passing through said slots in a wall of the said body portion to the interior of the body portion and secured to the inner face of the said wall.

5. In a sheet metal container, a body. portion constituting the container proper having slots. in a wall thereof, a lid adapted, in closed position, to have an overlapping lit with a part of said body.

portion, a hinge comprising a strip of flexible material secured to the inner face of the said lid, and tongues on the said strip formed by transverse cuts in the said strip, certain of the said tongues being passed through the slots in the Wall of the said container and secured to the inner face of the said wall, and the remainder of the said tongues being secured to the outer face of the lid-overlapping part of the said wall.

6. In a sheet metal container, a body portion constituting the container proper having slots 

